Keynesian famous ” crisis of underconsumption theory” contributed
greatly to the economic development on a global scale , but also
resulted in exponential growth in the consumption of resources ,
sustainable development gradually unsustainable , green concept is
catching on . LED solid-state lighting sources , such as solar power
technology and industrial development of countries competing to become
the ” beach-goers .” In 1962, the United States successfully developed
in a joint laboratory GE, Monsanto, IBM , marking the birth of the red led high bay fixture
compound semiconductor devices . From small emitters start , LED
lighting after six years of development , gradually evolved into going
to dominate the ” light” areas of the world “hegemony “, however, ”
sunny ” LED lighting in the world there are still ” a ” little clouds
LED driver .
To understand LED driver , the first to look at the composition of LED lights , LED spotlights from the typical LED light, aluminum plate , LED drivers / power supplies, lenses , radiator / heat sink , lamp , etc., shown in Figure 1 [ 1 ] . LED light source is of course the center of the lamp , but the LED driver also plays no small role. If the LED lights seen as the body , the driver can be compared to its “heart” , to provide the necessary “blood” and “nutrition .”
First. Past articles DC Switching Power Supply Classification
LED or LED driver power supply itself is an application type switching power supply , switching power supply LED driver can be called “past .” Switching power supply is generally defined as : the use of modern power electronics, control switch turn-on and turn-off time ratio , maintaining a stable output voltage , switching power supply generally consists of a pulse width modulation (PWM) control IC and MOSFET composition. Compared with another type switching power supply linear power , with a small , light-weight and high efficiency. Modern switching power supply has two: one is DC switching power supply ; another AC switching power supply. DC switching power supply to the power supply of poor quality of the original ecology (coarse electricity ) , such as mains or battery power is converted into high quality equipment to meet the requirements of the DC voltage ( Varitronix ) . Core DC switching power supply is DC / DC converters.
Switching power supply is a major event in the invention of the industrial sector, gave birth to the individual PC directly into millions of households . About Apple’s ” Joe closer ” and ” Steve Jobs Biography” in vivid , wrote: “Jobs consulting company dedicated to the Atari Alcorn his former boss , see if there is any way to make a computer without using a fan circumstances under supply. Alcorn Steve Jobs introduced to Rod Holt , a smart guy . Holt designed the Apple II ‘s power section , he did not use the traditional linear power , but to create an instrument such as an oscilloscope use of the switching power supply. such frequency power can pass off increased from 60 to thousands of times , thereby reducing the amount of heat supply Apple II Jobs believes that Rhodes should be a place in history , this power supply design is revolutionary invention . ” [ 3 ] switching power supply appears not only greatly reduces the size of the individual PC , but also to thousands of electronic products have become very” mini ” , led to the personal consumer electronics major development, we have today convenient life. Switching power supply products have been “expansion” is a huge family , ” their children ” widespread “service” in the industrial automation and control , military equipment , LED lighting , communications equipment , electrical equipment, medical equipment, LCD monitors , LED lighting, communications equipment , computer chassis , digital products and other fields.
Second, LED driver features and future direction
As a switching power supply LED driver family members , according to its load characteristics and application scenarios , with distinctive characteristics. I will sum up their demands for ” eight sophomore low .”
1 small ( low ): LED lamp to accommodate the installation space of the traditional lamp , LED driver is usually installed in the lamp inside , so the volume is smaller ;
2 High reliability : The driver is the source of living water LED lights , high reliability requirements is for certain ;
3 low cost: a major obstacle to the popularity of LED lighting is the cost of the LED chip costs have not dropped in front of people ‘s psychological expectations , LED drivers are subjected to layers of cost conscious and ” exploitation ” ;
4 High efficiency: high-efficiency LED lights how they have to find a ” perfect match” drive ;
5 good waterproof ( H): outdoor LED lighting applications such as street lights to withstand the test of rain and snow ;
6 vibration characteristics of a good ( high ) : outdoor LED lighting applications such as street lights to withstand the test of inclement weather windy ;
7 long-life ( H): claims life of 100,000 hours of LED lamp life can not have a short board ;
8 temperature characteristics ( high ) : the impact of high power density, and summer and winter ambient temperatures can not let the driver is not working ;
9 humidity characteristics of a good ( high ) : To withstand humid weather such as sauna day test ;
10 Immunity good ( high ) : lightning , overvoltage, overcurrent and other power fluctuations can damage the drive nothing.
Seen in this light , high-quality LED driver with high demands , but in the cost of the design cycle , intense competition and other pressures , many LED driver “fallen “, and simply replaces the standard capacitor step-down switching power supply appears in the crowded market of various LED . Is considered to be an important cause of led high bay fixture life can not achieve the expected . In fact, the “eight sophomore low ” requirements facing the LED driver can work together to resolve by way of technology and the environment, development to electrolytic capacitors, digital surveillance technology can improve the driver ‘s native life ; improve power quality , people -driven costs gradually changing the composition of the environmental tolerance can greatly improve the LED driver fate. But more important is the view of the driving concept.
In fact , LED light source and LED driver who has been closely bound together with all sorts of potential , LED light source is not just the lighting , the decision is not just a power LED driver . Say “LED high-tech ,” high-tech reflected in where? Only a light effect you ? Insufficiency yes. Reflected in the high-tech research and development, production, technology and other aspects . There it is the biggest difference with the traditional lighting sources , and that is its origin is actually a semiconductor chip , which determines the LED light source can be like other semiconductor chips , such as CPU, GPU, FPGA, ARM , etc. , like , a ” Pandora Magic box ” magic , with” mustard can be satisfied Sumeru ” magic , magic , and magic is inseparable from the driver ‘s help ( of course, with the semiconductor intelligent control chip driver ) , which is the source of intelligent lighting (smart lighting) concept lies. With smart lighting , we can monitor real-time energy consumption of lighting , lighting of the state , more prominent energy concept. Not only that , the lighting can be adjusted automatically according to the ambient light intensity and scenes. Imagine a quiet night , street lights are automatically adjusted to the low power output , cars and people appear to increase the output power , and then transferred back to the original state when you leave ; during the summer , the house is automatically adjusted to the cool colors …… family of intelligent lighting an application scenario shown in Figure 3 [ 4 ] , through smart phones, we can control the brightness of the living room, bedroom , study, LED lighting, space , color temperature , distribution, monitoring power consumption state lighting with a customized user free function.
All these are not fantasy. LED Driver LED lights at the same time as the “heart” of the courage to take again the “brains” of responsibility for various lighting gives fantastic features , the future , in the intelligent LED driver assistance , LED lamps can achieve the function of the human dream , become “Experience China” things important part.
More info you can visit:http://www.lighting-ledlight.com
To understand LED driver , the first to look at the composition of LED lights , LED spotlights from the typical LED light, aluminum plate , LED drivers / power supplies, lenses , radiator / heat sink , lamp , etc., shown in Figure 1 [ 1 ] . LED light source is of course the center of the lamp , but the LED driver also plays no small role. If the LED lights seen as the body , the driver can be compared to its “heart” , to provide the necessary “blood” and “nutrition .”
First. Past articles DC Switching Power Supply Classification
LED or LED driver power supply itself is an application type switching power supply , switching power supply LED driver can be called “past .” Switching power supply is generally defined as : the use of modern power electronics, control switch turn-on and turn-off time ratio , maintaining a stable output voltage , switching power supply generally consists of a pulse width modulation (PWM) control IC and MOSFET composition. Compared with another type switching power supply linear power , with a small , light-weight and high efficiency. Modern switching power supply has two: one is DC switching power supply ; another AC switching power supply. DC switching power supply to the power supply of poor quality of the original ecology (coarse electricity ) , such as mains or battery power is converted into high quality equipment to meet the requirements of the DC voltage ( Varitronix ) . Core DC switching power supply is DC / DC converters.
Switching power supply is a major event in the invention of the industrial sector, gave birth to the individual PC directly into millions of households . About Apple’s ” Joe closer ” and ” Steve Jobs Biography” in vivid , wrote: “Jobs consulting company dedicated to the Atari Alcorn his former boss , see if there is any way to make a computer without using a fan circumstances under supply. Alcorn Steve Jobs introduced to Rod Holt , a smart guy . Holt designed the Apple II ‘s power section , he did not use the traditional linear power , but to create an instrument such as an oscilloscope use of the switching power supply. such frequency power can pass off increased from 60 to thousands of times , thereby reducing the amount of heat supply Apple II Jobs believes that Rhodes should be a place in history , this power supply design is revolutionary invention . ” [ 3 ] switching power supply appears not only greatly reduces the size of the individual PC , but also to thousands of electronic products have become very” mini ” , led to the personal consumer electronics major development, we have today convenient life. Switching power supply products have been “expansion” is a huge family , ” their children ” widespread “service” in the industrial automation and control , military equipment , LED lighting , communications equipment , electrical equipment, medical equipment, LCD monitors , LED lighting, communications equipment , computer chassis , digital products and other fields.
Second, LED driver features and future direction
As a switching power supply LED driver family members , according to its load characteristics and application scenarios , with distinctive characteristics. I will sum up their demands for ” eight sophomore low .”
1 small ( low ): LED lamp to accommodate the installation space of the traditional lamp , LED driver is usually installed in the lamp inside , so the volume is smaller ;
2 High reliability : The driver is the source of living water LED lights , high reliability requirements is for certain ;
3 low cost: a major obstacle to the popularity of LED lighting is the cost of the LED chip costs have not dropped in front of people ‘s psychological expectations , LED drivers are subjected to layers of cost conscious and ” exploitation ” ;
4 High efficiency: high-efficiency LED lights how they have to find a ” perfect match” drive ;
5 good waterproof ( H): outdoor LED lighting applications such as street lights to withstand the test of rain and snow ;
6 vibration characteristics of a good ( high ) : outdoor LED lighting applications such as street lights to withstand the test of inclement weather windy ;
7 long-life ( H): claims life of 100,000 hours of LED lamp life can not have a short board ;
8 temperature characteristics ( high ) : the impact of high power density, and summer and winter ambient temperatures can not let the driver is not working ;
9 humidity characteristics of a good ( high ) : To withstand humid weather such as sauna day test ;
10 Immunity good ( high ) : lightning , overvoltage, overcurrent and other power fluctuations can damage the drive nothing.
Seen in this light , high-quality LED driver with high demands , but in the cost of the design cycle , intense competition and other pressures , many LED driver “fallen “, and simply replaces the standard capacitor step-down switching power supply appears in the crowded market of various LED . Is considered to be an important cause of led high bay fixture life can not achieve the expected . In fact, the “eight sophomore low ” requirements facing the LED driver can work together to resolve by way of technology and the environment, development to electrolytic capacitors, digital surveillance technology can improve the driver ‘s native life ; improve power quality , people -driven costs gradually changing the composition of the environmental tolerance can greatly improve the LED driver fate. But more important is the view of the driving concept.
In fact , LED light source and LED driver who has been closely bound together with all sorts of potential , LED light source is not just the lighting , the decision is not just a power LED driver . Say “LED high-tech ,” high-tech reflected in where? Only a light effect you ? Insufficiency yes. Reflected in the high-tech research and development, production, technology and other aspects . There it is the biggest difference with the traditional lighting sources , and that is its origin is actually a semiconductor chip , which determines the LED light source can be like other semiconductor chips , such as CPU, GPU, FPGA, ARM , etc. , like , a ” Pandora Magic box ” magic , with” mustard can be satisfied Sumeru ” magic , magic , and magic is inseparable from the driver ‘s help ( of course, with the semiconductor intelligent control chip driver ) , which is the source of intelligent lighting (smart lighting) concept lies. With smart lighting , we can monitor real-time energy consumption of lighting , lighting of the state , more prominent energy concept. Not only that , the lighting can be adjusted automatically according to the ambient light intensity and scenes. Imagine a quiet night , street lights are automatically adjusted to the low power output , cars and people appear to increase the output power , and then transferred back to the original state when you leave ; during the summer , the house is automatically adjusted to the cool colors …… family of intelligent lighting an application scenario shown in Figure 3 [ 4 ] , through smart phones, we can control the brightness of the living room, bedroom , study, LED lighting, space , color temperature , distribution, monitoring power consumption state lighting with a customized user free function.
All these are not fantasy. LED Driver LED lights at the same time as the “heart” of the courage to take again the “brains” of responsibility for various lighting gives fantastic features , the future , in the intelligent LED driver assistance , LED lamps can achieve the function of the human dream , become “Experience China” things important part.
More info you can visit:http://www.lighting-ledlight.com
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